If M is the mass of earth and R is the earth of radius the attracts a mass m on its surface with a force F given by F= GmM /R2 This force imparts on acceleration to the mass m which is known as acceleration due to gravity (g) By newton’s law we have Acceleration Read more about ACCELERATION DUE TO GRAVITY AND ITS VERIATION[…]
Generally accey body surface is rigid (micro seopic view) If we go for a microscopic view the surfaces like. So due to this rigidness the inter locking will occur between the two bodies. When there in contact tis inter locking should be in order to move the body on the other (or surface) this opposition Read more about Friction[…]
Escape velocity: It is the minimum velocity with which a body must be protected from the surface of the earth so that it escapes from the gravitational field of the earth. We can also say that a body, projected with escape velocity, will be able to go to a point which distance from the earth. Read more about ESCAPE VELOCITY AND ORBITAL VELOCITY OF SATELLITE[…]
A particle executing SHM possesses two types of energy if a particle executes SHM, its kinetic energy changes into potential energy and vice-versa keeping total energy constant (if friction of air is neglected). Kinetic energy: This is an account of the velocity of the particle. K = ½ mv2 = ½ mA2 ω2cos2 (ωt + Read more about Energy in Simple Harmonic Motion[…]
Conservative Force: A force is said to be conservative if the work done by the force (or against the force) in moving a body depends only upon the initial and final positions of the body and is independent of the path followed between the initial and final positions. The gravitational force is a conservative force. Read more about Conservative and Non Conservative Forces[…]
If no external torque is acting upon a body rotating about an axis, then the angular momentum of the body remains constant, that is, J = I ω = constant This is called the ‘law of conservation of angular momentum’. If I decreases, ω increases and vice versa. Proof: We have read above that when Read more about Conservation of Angular Momentum[…]
An instance of one moving object or person striking violently against another.Elastic collision: An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies after the encounter is equal to their total kinetic energy before the encounter. Elastic collisions occur only if there is no net conversion of kinetic energy into Read more about Collisions[…]
The principle states that “when a body is partially or completely immersed in a fluid, it experiences a buyont force (upthrust) due to which it appears lighter, the apparent loss in the weight of body is equal to the weight of the liquid displaced”. Proof of Archimedes’ Principle: Consider a cubical block ABCDEFGH of face Read more about Archimedes’ Principle[…]
Typical particle (at a point P) of the rigid body rotating about a fixed axis (taken as the z – axis). The particle describes a circle with a centre C on the axis. The radius of the circle is r, the perpendicular distance of the point P from the axis. We also show the linear Read more about Angular Velocity and its relation with linear velocity[…]
To find the equivalent resistance between A and B.After marking the junction Hence equivalent resistance between A and B is RAB = 3R/5. Nodal analysis: To find the current distribution in armsTo solve this one must assume the potential of one node equal to zero and then corresponding other potentials as marked in following diagramThe solving equation for Read more about Circuit Solution Methods (By Examples)[…]